PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/22-04:57:30
G07     2.7            65.9                5.6 +/-    0.55       6.1 +/-    0.55  0.050 / 0.110
G08     71.3           50.3                7.2 +/-    0.56       9.0 +/-    0.56  0.070 / 0.160
G09     181.1          56.8                8.5 +/-    0.75       9.9 +/-    0.75  0.040 / 0.030
G11     134.9          22.7                7.8 +/-    2.06      16.1 +/-    2.06  0.040 / 0.030
G23     159.7          27.0                7.7 +/-    1.33      14.3 +/-    1.33  0.040 / 0.040
G27     43.1           21.0                4.4 +/-    2.12       9.5 +/-    2.12  0.040 / 0.030
G28     252.2          41.8                7.3 +/-    2.40      10.3 +/-    2.40  0.060 / 0.030
G30     315.3          46.4                5.3 +/-    0.74       7.0 +/-    0.74  0.060 / 0.030