PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/17-09:58:00
G02     283.7          82.1                5.5 +/-    0.78       5.6 +/-    0.78  0.090 / 0.130
G05     169.2          22.7                5.2 +/-    3.42      10.7 +/-    3.42  0.090 / 0.120
G06     38.4           56.8                5.3 +/-    0.61       6.2 +/-    0.61  0.030 / 0.030
G12     320.2          58.0                5.9 +/-    0.53       6.8 +/-    0.53  0.030 / 0.040
G17     77.9           17.1                5.1 +/-    1.41      12.1 +/-    1.41  0.090 / 0.110
G19     65.7           32.9                3.8 +/-    1.61       6.2 +/-    1.61  0.090 / 0.110
G24     239.2          30.5                4.9 +/-    1.90       8.6 +/-    1.90  0.040 / 0.040
G25     317.7          19.1                4.2 +/-    0.91       9.5 +/-    0.91  0.030 / 0.030