PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/04-19:43:00
G01     222.8          13.4                9.8 +/-    3.02      25.3 +/-    3.02  0.040 / 0.030
G03     265.5          71.0                9.8 +/-    0.39      10.3 +/-    0.39  0.030 / 0.030
G14     90.9           21.9                9.0 +/-    1.15      18.9 +/-    1.15  0.130 / 0.240
G16     143.6          49.8               12.8 +/-    0.57      16.2 +/-    0.57  0.130 / 0.250
G22     204.1          65.7               10.9 +/-    0.39      11.8 +/-    0.39  0.140 / 0.580
G23     311.8          41.8               10.4 +/-    1.05      14.7 +/-    1.05  0.130 / 0.660
G26     87.3           54.5                9.7 +/-    0.93      11.6 +/-    0.93  0.040 / 0.050
G31     47.3           27.7                7.8 +/-    1.72      14.4 +/-    1.72  0.030 / 0.060