PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/31-20:28:10
G02     210.3          51.9               12.8 +/-    1.03      15.8 +/-    1.03  0.070 / 0.180
G06     100.0          79.9               10.4 +/-    0.62      10.5 +/-    0.62  0.070 / 0.190
G12     314.4          26.4                8.5 +/-    1.72      16.0 +/-    1.72  0.060 / 0.090
G17     49.7           38.1                9.1 +/-    0.44      13.7 +/-    0.44  0.070 / 0.090
G19     29.8           54.0               10.0 +/-    0.38      12.1 +/-    0.38  0.100 / 0.160
G24     276.1          42.4                9.9 +/-    1.68      13.8 +/-    1.68  0.080 / 0.170
G28     114.9          24.2               10.0 +/-    0.57      19.9 +/-    0.57  0.070 / 0.060