PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/22-15:12:30
G03     213.1          59.9               12.8 +/-    0.86      14.5 +/-    0.86  0.030 / 0.030
G07     254.4          12.7               11.2 +/-    2.80      29.4 +/-    2.80  0.040 / 0.030
G09     308.6          25.0                9.2 +/-    1.03      18.0 +/-    1.03  0.110 / 0.230
G14     106.3          11.2               10.2 +/-    1.45      27.6 +/-    1.45  0.120 / 0.350
G16     101.3          63.8               11.7 +/-    0.72      12.9 +/-    0.72  0.030 / 0.050
G22     184.9          41.3               10.9 +/-    1.28      15.5 +/-    1.28  0.030 / 0.040
G23     332.6          61.1               10.4 +/-    0.78      11.7 +/-    0.78  0.180 / 0.270
G26     55.4           44.2               10.8 +/-    0.73      14.7 +/-    0.73  0.170 / 0.230
G31     58.1           10.8                8.4 +/-    2.92      22.9 +/-    2.92  0.050 / 0.070