PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/14-06:57:50
G02     200.7          22.1                5.3 +/-    2.78      11.1 +/-    2.78  0.080 / 0.100
G06     171.6          54.8                8.2 +/-    1.19       9.8 +/-    1.19  0.090 / 0.100
G13     225.3          11.9                3.1 +/-    3.98       8.2 +/-    3.98  0.090 / 0.430
G17     27.4           56.1                4.0 +/-    0.75       4.8 +/-    0.75  0.110 / 0.450
G19     321.2          70.5                5.4 +/-    0.82       5.7 +/-    0.82  0.040 / 0.050
G24     305.8          34.7                3.9 +/-    1.72       6.2 +/-    1.72  0.040 / 0.040
G28     88.6           40.4                7.1 +/-    0.46      10.3 +/-    0.46  0.190 / 0.320
G30     157.8          14.1                6.2 +/-    3.03      15.7 +/-    3.03  0.190 / 0.290