PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/24-22:58:00
G07     33.4           69.5               10.4 +/-    0.76      11.0 +/-    0.76  0.130 / 0.090
G08     57.6           46.2                8.3 +/-    0.61      10.9 +/-    0.61  0.110 / 0.060
G09     179.9          43.5               11.2 +/-    0.58      15.4 +/-    0.58  0.160 / 0.300
G11     127.6          30.9               10.0 +/-    0.79      17.3 +/-    0.79  0.290 / 0.220
G23     159.9          11.7               10.9 +/-    2.18      29.2 +/-    2.18  0.040 / 0.070
G27     38.1           11.2                8.9 +/-    1.76      24.3 +/-    1.76  0.040 / 0.050
G28     268.3          50.1               10.2 +/-    2.98      12.9 +/-    2.98  0.070 / 0.100
G30     331.6          59.0                8.8 +/-    0.54      10.1 +/-    0.54  0.080 / 0.100