PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/16-18:27:50
G01     108.2          25.0               12.3 +/-    0.97      24.0 +/-    0.97  0.060 / 0.190
G07     104.8          59.5               12.3 +/-    1.05      14.1 +/-    1.05  0.060 / 0.200
G08     42.4           23.4                8.1 +/-    1.65      16.5 +/-    1.65  0.030 / 0.030
G09     175.2          14.7               10.8 +/-    1.80      27.1 +/-    1.80  0.030 / 0.030
G11     91.7           43.0               12.9 +/-    1.00      18.0 +/-    1.00  0.030 / 0.030
G13     310.6          27.8               10.3 +/-    1.22      18.9 +/-    1.22  0.030 / 0.050
G17     206.3          33.7               12.8 +/-    1.02      20.9 +/-    1.02  0.050 / 0.050
G18     82.0           24.2               11.7 +/-    2.32      23.3 +/-    2.32  0.040 / 0.060
G28     316.2          60.8                9.8 +/-    0.84      11.0 +/-    0.84  0.080 / 0.130
G30     23.3           77.7               11.6 +/-    0.87      11.8 +/-    0.87  0.070 / 0.140