PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/15-19:58:00
G10     262.3          34.5               13.8 +/-    1.56      22.1 +/-    1.56  0.130 / 0.180
G13     44.9           23.0                9.9 +/-    1.39      20.3 +/-    1.39  0.100 / 0.170
G15     64.1           51.4               12.9 +/-    0.57      15.9 +/-    0.57  0.040 / 0.100
G16     288.0          12.2               13.2 +/-    2.56      35.2 +/-    2.56  0.040 / 0.090
G18     292.7          63.2               11.5 +/-    0.54      12.7 +/-    0.54  0.040 / 0.040
G20     51.2           38.6               10.4 +/-    0.95      15.5 +/-    0.95  0.040 / 0.060
G21     359.3          70.4               12.3 +/-    1.01      13.0 +/-    1.01  0.140 / 0.320
G24     125.1          11.3              -16.6 +/-   28.13     -45.0 +/-   28.13  0.220 / 0.570
G27     319.7          16.8                9.8 +/-    1.57      23.3 +/-    1.57  0.190 / 0.490
G29     165.1          30.6               15.1 +/-    2.07      26.1 +/-    2.07  0.080 / 0.220