PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/14-20:42:50
G01     74.4           32.9               10.9 +/-    0.81      18.0 +/-    0.81  0.090 / 0.110
G07     135.1          28.3               14.0 +/-    1.22      25.5 +/-    1.22  0.080 / 0.110
G11     55.0           32.4               10.1 +/-    1.30      16.9 +/-    1.30  0.080 / 0.100
G13     278.1          38.6               12.1 +/-    1.96      18.0 +/-    1.96  0.080 / 0.070
G15     304.8          14.9                7.8 +/-    2.67      19.4 +/-    2.67  0.040 / 0.060
G17     226.8          67.0               13.3 +/-    0.80      14.4 +/-    0.80  0.060 / 0.050
G18     49.9           18.4                9.4 +/-    2.98      21.5 +/-    2.98  0.030 / 0.020
G19     221.0          39.0               14.2 +/-    1.85      21.1 +/-    1.85  0.030 / 0.030
G28     4.5            61.1                9.7 +/-    0.92      10.9 +/-    0.92  0.060 / 0.110
G30     131.8          63.7               12.5 +/-    0.34      13.8 +/-    0.34  0.070 / 0.110