PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/07-17:27:40
G01     39.4           13.5                7.8 +/-    1.11      20.1 +/-    1.11  0.080 / 0.190
G02     200.0          10.5                1.7 +/-   17.23       4.6 +/-   17.23  0.070 / 0.220
G06     172.3          44.8               15.1 +/-    1.31      20.5 +/-    1.31  0.080 / 0.190
G13     234.3          19.4               13.2 +/-    1.51      29.5 +/-    1.51  0.080 / 0.140
G15     269.6          10.6               11.3 +/-    3.93      31.1 +/-    3.93  0.190 / 0.310
G17     7.4            67.8               12.2 +/-    0.73      13.1 +/-    0.73  0.310 / 0.510
G19     282.9          68.7               11.7 +/-    0.59      12.5 +/-    0.59  0.100 / 0.180
G24     314.7          23.3                8.9 +/-    0.95      18.2 +/-    0.95  0.110 / 0.180
G28     76.5           44.9               11.9 +/-    0.80      16.1 +/-    0.80  0.060 / 0.120
G30     155.8          24.3               12.7 +/-    1.31      25.1 +/-    1.31  0.040 / 0.100