PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/13-23:43:10
G08     313.2          17.2                9.2 +/-    2.25      21.8 +/-    2.25  0.040 / 0.030
G10     319.3          57.5                8.7 +/-    1.02      10.1 +/-    1.02  0.030 / 0.030
G14     215.2          26.8                9.9 +/-    2.65      18.6 +/-    2.65  0.050 / 0.090
G15     45.9           16.3                8.9 +/-    3.13      21.5 +/-    3.13  0.050 / 0.080
G18     27.6           62.0               10.5 +/-    1.95      11.7 +/-    1.95  0.050 / 0.050
G21     127.2          61.4               11.3 +/-    0.32      12.7 +/-    0.32  0.050 / 0.070
G24     82.7           30.4               10.4 +/-    0.78      18.0 +/-    0.78  0.160 / 0.160
G27     280.8          38.1               11.0 +/-    1.88      16.6 +/-    1.88  0.100 / 0.180
G32     219.0          43.7               12.3 +/-    1.43      16.9 +/-    1.43  0.040 / 0.040