PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/07-23:42:30
G02     204.3          39.8               15.8 +/-    1.29      23.1 +/-    1.29  0.080 / 0.070
G06     162.1          71.1               14.1 +/-    0.60      14.8 +/-    0.60  0.090 / 0.090
G12     308.6          16.2                8.1 +/-    1.94      19.6 +/-    1.94  0.300 / 0.300
G17     40.7           45.1               10.4 +/-    0.95      14.0 +/-    0.95  0.270 / 0.310
G19     9.6            62.7               11.3 +/-    0.37      12.6 +/-    0.37  0.070 / 0.130
G24     291.3          40.8                9.9 +/-    7.13      14.2 +/-    7.13  0.060 / 0.120
G28     104.4          31.9               12.8 +/-    0.65      21.5 +/-    0.65  0.040 / 0.030