PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/25-00:27:50
G10     257.4          32.0               12.6 +/-    2.71      21.1 +/-    2.71  0.210 / 0.160
G13     47.4           25.2                9.5 +/-    2.41      18.6 +/-    2.41  0.470 / 0.220
G15     75.6           56.8                9.6 +/-    0.56      11.2 +/-    0.56  0.050 / 0.040
G16     286.7          14.9                7.0 +/-    2.19      17.4 +/-    2.19  0.060 / 0.050
G20     266.3          37.9                8.4 +/-    2.62      12.7 +/-    2.62  0.140 / 0.350
G21     342.4          64.8               10.7 +/-    0.58      11.6 +/-    0.58  0.160 / 0.320
G26     259.4          12.4               11.6 +/-    2.30      30.7 +/-    2.30  0.140 / 0.140
G27     322.0          11.0               -9.6 +/-   26.20     -26.3 +/-   26.20  0.120 / 0.170
G29     167.0          42.6               11.0 +/-    0.36      15.4 +/-    0.36  0.040 / 0.030