PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/14-09:58:00
G01     81.6           33.0                5.9 +/-    1.00       9.7 +/-    1.00  0.050 / 0.070
G07     131.4          37.6                7.7 +/-    0.40      11.7 +/-    0.40  0.040 / 0.060
G11     60.7           35.0                4.7 +/-    0.68       7.5 +/-    0.68  0.030 / 0.050
G13     288.2          36.5                5.9 +/-    1.55       9.0 +/-    1.55  0.030 / 0.050
G15     310.7          12.6                3.3 +/-    1.56       8.6 +/-    1.56  0.090 / 0.220
G17     220.9          62.9                9.8 +/-    0.91      10.9 +/-    0.91  0.090 / 0.270
G19     218.2          35.3                7.6 +/-    2.32      12.0 +/-    2.32  0.050 / 0.040
G28     3.9            60.8                5.6 +/-    0.57       6.4 +/-    0.57  0.030 / 0.040
G30     120.8          71.0                8.0 +/-    0.38       8.4 +/-    0.38  0.060 / 0.110