PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/11-03:13:10
G07     339.0          59.9                5.0 +/-    0.99       5.6 +/-    0.99  0.110 / 0.160
G08     92.5           52.3                4.8 +/-    0.50       5.9 +/-    0.50  0.120 / 0.150
G09     188.4          70.5                7.2 +/-    0.29       7.6 +/-    0.29  0.030 / 0.050
G11     143.8          14.8                5.3 +/-    3.75      13.4 +/-    3.75  0.040 / 0.040
G23     156.8          39.1                6.7 +/-    0.90       9.9 +/-    0.90  0.030 / 0.040
G27     51.3           29.0                2.7 +/-    1.17       4.9 +/-    1.17  0.030 / 0.040
G28     240.5          32.9                7.8 +/-    1.17      12.9 +/-    1.17  0.040 / 0.030
G30     305.6          38.5                4.8 +/-    1.14       7.2 +/-    1.14  0.030 / 0.040