PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/15-00:42:50
G01     106.9          25.7                6.3 +/-    0.68      12.2 +/-    0.68  0.040 / 0.050
G07     106.9          58.3                7.4 +/-    0.46       8.5 +/-    0.46  0.040 / 0.060
G08     42.2           22.1                5.0 +/-    1.27      10.5 +/-    1.27  0.080 / 0.150
G09     175.6          14.4                9.9 +/-    1.63      25.0 +/-    1.63  0.050 / 0.150
G11     92.3           43.4                6.8 +/-    0.71       9.4 +/-    0.71  0.060 / 0.080
G13     310.0          28.0                3.4 +/-    1.80       6.2 +/-    1.80  0.050 / 0.080
G17     206.4          36.7                7.2 +/-    1.95      11.1 +/-    1.95  0.070 / 0.120
G19     209.1          13.5                4.8 +/-    1.80      12.3 +/-    1.80  0.080 / 0.100
G28     319.7          61.2                5.8 +/-    0.56       6.6 +/-    0.56  0.030 / 0.040
G30     49.0           77.9                7.1 +/-    0.62       7.2 +/-    0.62  0.030 / 0.040