PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/19-03:27:20
G02     200.3          27.2                5.4 +/-    1.67      10.0 +/-    1.67  0.050 / 0.110
G06     171.7          57.4                5.0 +/-    0.61       5.8 +/-    0.61  0.060 / 0.080
G17     24.9           57.5                3.8 +/-    1.10       4.4 +/-    1.10  0.040 / 0.040
G19     338.9          69.7                2.5 +/-    0.55       2.6 +/-    0.55  0.050 / 0.040
G24     307.3          32.1                3.2 +/-    1.78       5.4 +/-    1.78  0.040 / 0.030
G28     93.6           36.4                4.4 +/-    1.43       6.8 +/-    1.43  0.030 / 0.040