PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/07-23:57:50
G01     85.8           32.7                8.7 +/-    1.18      14.4 +/-    1.18  0.030 / 0.040
G07     128.7          42.6               12.0 +/-    0.84      16.7 +/-    0.84  0.030 / 0.040
G11     67.5           40.1                8.8 +/-    1.51      12.8 +/-    1.51  0.060 / 0.100
G13     290.9          36.5                8.4 +/-    2.14      12.9 +/-    2.14  0.080 / 0.080
G15     312.2          12.0                8.2 +/-    2.61      21.9 +/-    2.61  0.040 / 0.040
G17     218.0          54.7               10.5 +/-    1.26      12.5 +/-    1.26  0.070 / 0.030
G19     216.5          30.5               11.0 +/-    2.65      19.0 +/-    2.65  0.030 / 0.050
G28     357.7          61.3                8.0 +/-    0.90       8.9 +/-    0.90  0.040 / 0.050
G30     117.9          69.5               10.8 +/-    1.14      11.4 +/-    1.14  0.060 / 0.080