PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/05-22:44:40
G02     221.4          66.2               12.9 +/-    0.78      14.0 +/-    0.78  0.050 / 0.050
G06     49.2           72.1               11.7 +/-    0.28      12.3 +/-    0.28  0.060 / 0.080
G12     319.0          38.2                9.1 +/-    1.24      13.6 +/-    1.24  0.060 / 0.090
G17     61.5           28.7               10.6 +/-    2.56      19.2 +/-    2.56  0.060 / 0.100
G19     45.4           45.3               11.9 +/-    1.06      16.0 +/-    1.06  0.150 / 0.300
G24     257.2          40.0               12.9 +/-    2.92      18.8 +/-    2.92  0.180 / 0.320
G28     124.8          13.8               15.7 +/-    2.33      40.2 +/-    2.33  0.030 / 0.020