PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/26-00:42:50
G01     83.5           33.0                6.8 +/-    0.46      11.2 +/-    0.46  0.040 / 0.060
G07     130.3          40.9                8.9 +/-    0.95      12.7 +/-    0.95  0.030 / 0.040
G11     65.4           39.3                4.9 +/-    0.45       7.2 +/-    0.45  0.060 / 0.050
G13     288.7          36.9                5.2 +/-    1.01       8.0 +/-    1.01  0.040 / 0.060
G15     310.7          12.8                5.2 +/-    1.47      13.6 +/-    1.47  0.060 / 0.100
G17     219.7          57.1                7.2 +/-    1.69       8.4 +/-    1.69  0.050 / 0.090
G19     217.5          32.5                6.6 +/-    1.55      11.0 +/-    1.55  0.070 / 0.120
G28     1.5            61.1                4.5 +/-    0.56       5.1 +/-    0.56  0.070 / 0.120
G30     121.7          67.4                6.5 +/-    0.61       7.0 +/-    0.61  0.030 / 0.060