PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/17-03:13:00
G01     38.1           10.7                4.6 +/-    2.10      12.7 +/-    2.10  0.040 / 0.040
G02     198.9          16.9                5.2 +/-    2.55      12.3 +/-    2.55  0.030 / 0.040
G06     175.2          45.6                9.2 +/-    2.33      12.3 +/-    2.33  0.060 / 0.060
G13     232.4          17.0                4.9 +/-    2.24      11.6 +/-    2.24  0.040 / 0.070
G17     11.5           65.6                3.5 +/-    0.92       3.8 +/-    0.92  0.040 / 0.080
G19     303.8          71.4                2.2 +/-    1.07       2.4 +/-    1.07  0.040 / 0.090
G24     313.9          24.5                4.4 +/-    2.57       8.7 +/-    2.57  0.140 / 0.340
G28     81.8           42.4                5.3 +/-    0.76       7.4 +/-    0.76  0.200 / 0.340
G30     155.0          16.4                6.7 +/-    2.41      16.1 +/-    2.41  0.170 / 0.430