PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/19-21:58:00
G05     51.6           11.4                6.6 +/-    2.26      17.8 +/-    2.26  0.210 / 0.150
G10     241.2          18.1               13.3 +/-    3.29      30.6 +/-    3.29  0.100 / 0.120
G13     66.1           34.9                8.1 +/-    1.50      12.9 +/-    1.50  0.060 / 0.050
G15     117.9          56.5                9.1 +/-    1.13      10.6 +/-    1.13  0.040 / 0.060
G16     305.8          15.4                7.0 +/-    2.64      17.3 +/-    2.64  0.090 / 0.350
G20     245.6          10.9                5.5 +/-    2.00      15.0 +/-    2.00  0.080 / 0.350
G21     319.4          51.1                8.8 +/-    0.81      10.9 +/-    0.81  0.050 / 0.100
G26     278.0          19.7               10.2 +/-    1.39      22.5 +/-    1.39  0.070 / 0.100
G29     161.0          65.1                9.5 +/-    0.44      10.4 +/-    0.44  0.040 / 0.040