PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/12-14:42:50
G02     218.2          56.9               11.0 +/-    0.99      12.8 +/-    0.99  0.040 / 0.070
G06     53.5           72.0                9.6 +/-    0.41      10.1 +/-    0.41  0.050 / 0.060
G12     320.0          40.8                7.7 +/-    1.01      11.1 +/-    1.01  0.140 / 0.310
G17     59.3           30.2                7.2 +/-    2.05      12.6 +/-    2.05  0.120 / 0.280
G19     35.3           51.8                9.4 +/-    2.14      11.6 +/-    2.14  0.070 / 0.080
G24     260.2          41.6               11.7 +/-    2.52      16.5 +/-    2.52  0.070 / 0.080
G28     123.3          13.4                8.9 +/-    2.44      23.1 +/-    2.44  0.040 / 0.020