PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/04-05:13:00
G02     232.4          73.0                3.3 +/-    0.54       3.5 +/-    0.54  0.030 / 0.040
G05     173.3          12.5                1.9 +/-    6.02       5.0 +/-    6.02  0.040 / 0.040
G06     41.9           67.4                2.2 +/-    0.55       2.4 +/-    0.55  0.260 / 0.300
G12     320.6          45.6                3.0 +/-    0.78       4.0 +/-    0.78  0.180 / 0.270
G17     68.4           22.7                1.7 +/-    2.44       3.4 +/-    2.44  0.050 / 0.090
G19     51.6           42.1                3.1 +/-    1.48       4.4 +/-    1.48  0.080 / 0.080
G24     246.1          36.9                4.4 +/-    1.05       6.8 +/-    1.05  0.040 / 0.020
G25     315.7          12.0               -3.8 +/-   21.42     -10.2 +/-   21.42  0.040 / 0.020