PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/07-21:12:50
G01     73.7           32.9               11.0 +/-    0.98      18.2 +/-    0.98  0.080 / 0.100
G07     135.5          28.0               14.5 +/-    1.14      26.5 +/-    1.14  0.090 / 0.130
G11     54.5           31.9                9.7 +/-    1.54      16.3 +/-    1.54  0.060 / 0.120
G13     277.3          38.5               11.7 +/-    1.37      17.4 +/-    1.37  0.050 / 0.100
G15     304.3          15.0                7.4 +/-    2.22      18.4 +/-    2.22  0.040 / 0.050
G17     227.8          67.8               13.8 +/-    0.99      14.8 +/-    0.99  0.040 / 0.050
G18     49.2           18.0                9.4 +/-    2.82      21.8 +/-    2.82  0.100 / 0.080
G19     221.5          39.5               13.5 +/-    1.77      19.9 +/-    1.77  0.080 / 0.090
G28     6.0            61.0               11.2 +/-    1.11      12.6 +/-    1.11  0.030 / 0.040
G30     132.5          63.4               13.8 +/-    0.37      15.3 +/-    0.37  0.030 / 0.040