PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/28-01:13:10
G01     124.1          14.1                8.1 +/-    2.09      20.5 +/-    2.09  0.070 / 0.120
G07     63.7           68.8                5.1 +/-    0.67       5.4 +/-    0.67  0.060 / 0.110
G08     48.6           37.8                4.4 +/-    0.77       6.6 +/-    0.77  0.140 / 0.310
G09     178.5          33.1                8.8 +/-    2.42      14.4 +/-    2.42  0.180 / 0.330
G11     116.6          36.7                7.5 +/-    0.72      11.6 +/-    0.72  0.030 / 0.060
G13     320.4          13.7                3.8 +/-    3.28       9.7 +/-    3.28  0.060 / 0.070
G17     200.8          18.1                9.9 +/-    0.88      22.9 +/-    0.88  0.070 / 0.180
G28     283.4          55.3                6.1 +/-    0.68       7.3 +/-    0.68  0.070 / 0.190
G30     344.5          66.3                3.3 +/-    0.47       3.6 +/-    0.47  0.030 / 0.040