PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/01-23:27:50
G01     49.5           25.0               11.1 +/-    0.78      21.7 +/-    0.78  0.060 / 0.120
G06     177.9          25.7               18.2 +/-    1.78      35.0 +/-    1.78  0.060 / 0.130
G07     146.6          12.1               16.0 +/-    2.19      42.6 +/-    2.19  0.030 / 0.040
G11     45.1           16.3                9.0 +/-    1.07      21.6 +/-    1.07  0.030 / 0.040
G13     250.2          29.9               13.0 +/-    0.80      22.8 +/-    0.80  0.040 / 0.060
G15     282.5          15.7               12.4 +/-    2.06      30.2 +/-    2.06  0.040 / 0.060
G17     299.3          77.3               12.2 +/-    0.61      12.5 +/-    0.61  0.060 / 0.300
G19     248.0          60.2               14.4 +/-    0.74      16.3 +/-    0.74  0.100 / 0.300
G28     54.4           52.2               11.1 +/-    0.53      13.7 +/-    0.53  0.120 / 0.350
G30     149.5          38.1               15.5 +/-    1.19      23.3 +/-    1.19  0.150 / 0.420