PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/14-14:57:40
G01     92.6           31.2               13.7 +/-    0.91      23.4 +/-    0.91  0.040 / 0.030
G07     123.6          47.4               11.9 +/-    1.05      15.5 +/-    1.05  0.030 / 0.030
G11     70.5           40.3               12.6 +/-    0.57      18.3 +/-    0.57  0.090 / 0.110
G13     296.7          35.5               11.5 +/-    1.00      18.2 +/-    1.00  0.100 / 0.130
G17     213.0          51.3               15.0 +/-    1.40      18.6 +/-    1.40  0.040 / 0.060
G18     65.6           24.1               11.5 +/-    1.61      23.0 +/-    1.61  0.040 / 0.050
G19     214.0          22.6               14.4 +/-    1.55      29.7 +/-    1.55  0.030 / 0.050
G28     344.9          61.8               11.3 +/-    0.82      12.6 +/-    0.82  0.050 / 0.060
G30     94.1           78.1               12.6 +/-    0.54      12.9 +/-    0.54  0.040 / 0.090