PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/14-16:27:50
G01     47.5           23.5                9.0 +/-    0.86      18.2 +/-    0.86  0.050 / 0.090
G06     175.7          29.8               16.4 +/-    1.59      28.8 +/-    1.59  0.060 / 0.080
G11     43.9           11.9                9.5 +/-    2.13      25.6 +/-    2.13  0.060 / 0.120
G13     246.9          28.5               13.2 +/-    1.92      23.8 +/-    1.92  0.070 / 0.120
G15     282.9          14.5               11.6 +/-    1.19      29.1 +/-    1.19  0.040 / 0.070
G17     329.2          77.3               12.4 +/-    0.80      12.7 +/-    0.80  0.040 / 0.060
G19     250.2          59.7               14.2 +/-    0.63      16.2 +/-    0.63  0.200 / 0.330
G24     318.5          11.8              -15.0 +/-   27.05     -40.3 +/-   27.05  0.220 / 0.430
G28     57.3           51.6               11.9 +/-    0.72      14.7 +/-    0.72  0.210 / 0.420
G30     151.4          38.7               13.6 +/-    0.84      20.1 +/-    0.84  0.200 / 0.420