PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/18-01:42:40
G01     43.5           19.7                3.9 +/-    2.63       8.7 +/-    2.63  0.040 / 0.040
G06     179.2          29.9                6.4 +/-    0.89      11.3 +/-    0.89  0.040 / 0.030
G13     241.1          25.5                5.2 +/-    2.16      10.0 +/-    2.16  0.040 / 0.050
G15     275.1          13.7                3.2 +/-    1.42       8.3 +/-    1.42  0.040 / 0.050
G17     357.7          72.9                5.4 +/-    1.00       5.7 +/-    1.00  0.290 / 0.250
G19     262.6          65.7                5.9 +/-    1.11       6.4 +/-    1.11  0.200 / 0.260
G24     317.0          17.6                4.6 +/-    1.81      10.7 +/-    1.81  0.100 / 0.210
G28     61.4           51.4                4.8 +/-    0.99       6.0 +/-    0.99  0.100 / 0.230
G30     153.3          32.7                6.6 +/-    2.04      10.9 +/-    2.04  0.100 / 0.180