PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/22-19:12:30
G03     212.4          60.1               13.6 +/-    0.68      15.5 +/-    0.68  0.040 / 0.040
G07     254.0          12.5               13.2 +/-    2.86      35.0 +/-    2.86  0.040 / 0.040
G09     308.1          24.0               11.3 +/-    1.42      22.6 +/-    1.42  0.130 / 0.170
G16     107.3          64.1               15.5 +/-    0.90      17.0 +/-    0.90  0.130 / 0.200
G22     188.4          44.7               14.1 +/-    1.76      19.1 +/-    1.76  0.050 / 0.070
G23     328.4          57.9               12.2 +/-    0.48      14.1 +/-    0.48  0.050 / 0.060
G26     56.9           45.7               10.2 +/-    0.69      13.6 +/-    0.69  0.040 / 0.050
G31     57.4           12.4                9.5 +/-    1.72      25.2 +/-    1.72  0.040 / 0.060