PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/02-07:43:00
G07     329.2          56.5                4.0 +/-    0.90       4.7 +/-    0.90  0.080 / 0.230
G08     103.7          50.0                7.9 +/-    0.81       9.9 +/-    0.81  0.080 / 0.150
G09     193.7          77.3                5.3 +/-    0.94       5.4 +/-    0.94  0.040 / 0.030
G11     147.3          10.2               -3.8 +/-   20.64     -10.6 +/-   20.64  0.030 / 0.030
G16     45.0           14.4                2.5 +/-    2.57       6.2 +/-    2.57  0.050 / 0.050
G23     154.3          48.4                8.3 +/-    1.61      10.6 +/-    1.61  0.050 / 0.040
G27     58.7           32.9                4.1 +/-    0.67       6.7 +/-    0.67  0.030 / 0.050
G28     234.2          26.5                6.8 +/-    2.72      12.8 +/-    2.72  0.030 / 0.040
G30     297.8          31.2                2.4 +/-    1.13       4.1 +/-    1.13  0.120 / 0.240