PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/23-22:57:40
G08     315.0          16.0               11.8 +/-    2.93      28.6 +/-    2.93  0.060 / 0.040
G10     315.4          56.6               12.3 +/-    1.42      14.4 +/-    1.42  0.060 / 0.040
G14     214.2          24.5               17.3 +/-    3.14      34.2 +/-    3.14  0.090 / 0.100
G15     45.7           18.0               11.0 +/-    3.15      25.5 +/-    3.15  0.080 / 0.090
G18     23.8           62.7               13.6 +/-    1.32      15.1 +/-    1.32  0.040 / 0.030
G20     80.2           10.2               14.3 +/-    1.39      39.8 +/-    1.39  0.040 / 0.040
G21     124.2          63.1               15.0 +/-    0.46      16.6 +/-    0.46  0.250 / 0.360
G24     85.4           30.1               13.3 +/-    1.59      23.2 +/-    1.59  0.160 / 0.360
G27     283.9          38.0               14.9 +/-    2.54      22.4 +/-    2.54  0.060 / 0.070
G32     217.6          41.0               16.5 +/-    1.21      23.6 +/-    1.21  0.080 / 0.060