PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/26-13:27:50
G01     112.3          22.5                7.7 +/-    1.26      15.9 +/-    1.26  0.030 / 0.030
G07     97.4           62.1                5.0 +/-    0.67       5.5 +/-    0.67  0.030 / 0.030
G08     42.5           24.1                3.4 +/-    1.49       6.7 +/-    1.49  0.100 / 0.220
G09     174.6          17.0                6.0 +/-    1.89      14.2 +/-    1.89  0.100 / 0.200
G11     95.6           42.0                6.6 +/-    0.67       9.3 +/-    0.67  0.050 / 0.060
G13     313.4          25.2                5.3 +/-    2.16      10.4 +/-    2.16  0.040 / 0.060
G17     203.6          32.6                5.9 +/-    1.32       9.7 +/-    1.32  0.050 / 0.080
G18     85.9           23.1                4.1 +/-    1.18       8.4 +/-    1.18  0.060 / 0.100
G28     306.8          59.8                5.0 +/-    1.28       5.7 +/-    1.28  0.030 / 0.040
G30     359.9          74.1                4.8 +/-    0.99       4.9 +/-    0.99  0.030 / 0.040