PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/06-18:42:40
G02     206.7          42.3               11.5 +/-    1.01      16.1 +/-    1.01  0.090 / 0.170
G06     129.2          77.3               10.1 +/-    0.99      10.3 +/-    0.99  0.120 / 0.150
G12     312.9          24.7               10.2 +/-    1.30      20.2 +/-    1.30  0.080 / 0.170
G17     43.3           43.5                8.5 +/-    1.47      11.7 +/-    1.47  0.080 / 0.190
G19     12.4           61.4                9.1 +/-    0.40      10.3 +/-    0.40  0.050 / 0.090
G24     286.4          41.9               10.2 +/-    1.95      14.4 +/-    1.95  0.060 / 0.090
G28     110.3          25.4               10.5 +/-    1.02      20.3 +/-    1.02  0.050 / 0.070