PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/13-14:27:40
G03     225.6          68.3                8.9 +/-    0.58       9.5 +/-    0.58  0.120 / 0.210
G07     248.4          11.7                1.9 +/-   17.33       5.2 +/-   17.33  0.240 / 0.320
G09     302.5          16.6                6.9 +/-    2.58      16.5 +/-    2.58  0.030 / 0.040
G14     99.1           14.2                8.6 +/-    1.42      21.9 +/-    1.42  0.040 / 0.040
G16     135.4          56.9               10.7 +/-    0.84      12.5 +/-    0.84  0.220 / 0.380
G22     189.1          52.3               14.4 +/-    0.82      17.7 +/-    0.82  0.150 / 0.400
G23     318.6          48.5                8.1 +/-    0.49      10.4 +/-    0.49  0.040 / 0.060
G26     74.1           53.9                7.8 +/-    0.60       9.4 +/-    0.60  0.040 / 0.060
G31     51.7           20.9                6.5 +/-    2.68      14.1 +/-    2.68  0.290 / 0.310