PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/27-00:42:50
G02     199.3          19.0               10.7 +/-    2.06      24.0 +/-    2.06  0.030 / 0.030
G06     172.9          49.7               11.2 +/-    1.02      14.2 +/-    1.02  0.030 / 0.030
G13     230.2          15.4               12.2 +/-    2.30      30.2 +/-    2.30  0.030 / 0.020
G17     11.4           65.0                8.5 +/-    0.68       9.3 +/-    0.68  0.030 / 0.020
G19     310.1          71.3                8.9 +/-    0.60       9.3 +/-    0.60  0.040 / 0.060
G24     312.4          26.8                9.1 +/-    1.18      17.0 +/-    1.18  0.050 / 0.070
G28     84.6           41.2                8.6 +/-    0.98      12.2 +/-    0.98  0.220 / 0.300
G30     155.9          15.5               11.1 +/-    1.39      27.4 +/-    1.39  0.210 / 0.220