PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/18-16:27:40
G03     217.3          63.8               10.1 +/-    0.84      11.1 +/-    0.84  0.170 / 0.180
G07     252.6          14.8                8.7 +/-    1.56      21.6 +/-    1.56  0.070 / 0.240
G09     306.0          21.5                6.9 +/-    2.77      14.7 +/-    2.77  0.170 / 0.410
G14     103.9          10.1               10.4 +/-    3.00      28.8 +/-    3.00  0.250 / 0.480
G16     127.9          61.3                9.1 +/-    0.45      10.2 +/-    0.45  0.040 / 0.060
G22     188.5          47.1               10.4 +/-    0.42      13.6 +/-    0.42  0.030 / 0.050
G23     322.7          52.6                8.4 +/-    0.60      10.3 +/-    0.60  0.040 / 0.050
G26     65.9           52.0                7.1 +/-    0.98       8.8 +/-    0.98  0.050 / 0.060
G31     54.6           17.3                5.8 +/-    1.59      13.7 +/-    1.59  0.110 / 0.180