PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/06-04:12:30
G02     199.6          23.5                6.1 +/-    2.74      12.4 +/-    2.74  0.070 / 0.080
G06     173.9          52.7                4.9 +/-    0.93       6.0 +/-    0.93  0.080 / 0.090
G13     227.4          12.5                4.2 +/-    1.99      11.0 +/-    1.99  0.030 / 0.030
G17     21.5           59.9                3.7 +/-    0.80       4.2 +/-    0.80  0.040 / 0.030
G19     328.0          70.9                2.6 +/-    0.57       2.8 +/-    0.57  0.050 / 0.050
G24     310.0          29.5                2.1 +/-    0.92       3.8 +/-    0.92  0.030 / 0.040
G28     89.6           38.6                5.3 +/-    1.02       7.8 +/-    1.02  0.080 / 0.110
G30     156.0          10.4                3.3 +/-    5.06       9.0 +/-    5.06  0.080 / 0.100