PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/30-19:42:40
G01     44.2           20.3               10.1 +/-    1.03      22.1 +/-    1.03  0.080 / 0.210
G06     175.2          34.4               16.6 +/-    0.94      26.6 +/-    0.94  0.120 / 0.190
G13     242.5          25.5               14.5 +/-    1.33      28.0 +/-    1.33  0.180 / 0.430
G15     276.7          13.7               13.6 +/-    1.78      34.8 +/-    1.78  0.170 / 0.390
G17     338.6          75.2               13.6 +/-    0.66      14.1 +/-    0.66  0.070 / 0.090
G19     260.9          64.4               13.2 +/-    0.48      14.4 +/-    0.48  0.060 / 0.090
G24     317.9          15.3                8.9 +/-    1.49      22.0 +/-    1.49  0.020 / 0.030
G28     64.6           49.3               12.7 +/-    1.49      16.2 +/-    1.49  0.020 / 0.030
G30     152.9          32.5               15.4 +/-    1.48      25.6 +/-    1.48  0.040 / 0.060