PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/17-03:12:40
G01     38.1           10.7                5.3 +/-    5.48      14.6 +/-    5.48  0.050 / 0.070
G02     198.9          16.9                6.0 +/-    2.24      14.2 +/-    2.24  0.040 / 0.070
G06     175.2          45.6                8.0 +/-    0.65      10.7 +/-    0.65  0.040 / 0.040
G13     232.4          17.0                5.2 +/-    2.30      12.2 +/-    2.30  0.040 / 0.030
G17     11.5           65.6                5.3 +/-    0.46       5.7 +/-    0.46  0.040 / 0.060
G19     303.8          71.4                5.2 +/-    0.67       5.4 +/-    0.67  0.050 / 0.040
G24     313.9          24.5                2.5 +/-    1.70       4.9 +/-    1.70  0.300 / 0.190
G28     81.8           42.4                6.8 +/-    0.95       9.5 +/-    0.95  0.100 / 0.290
G30     155.0          16.4                8.2 +/-    2.87      19.6 +/-    2.87  0.140 / 0.240