PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/25-01:27:50
G01     61.2           30.9                5.9 +/-    0.80      10.2 +/-    0.80  0.040 / 0.030
G06     181.5          12.9                9.3 +/-    1.42      24.4 +/-    1.42  0.050 / 0.040
G07     141.9          23.5                9.0 +/-    2.68      18.1 +/-    2.68  0.070 / 0.070
G11     50.1           27.0                3.1 +/-    2.25       5.7 +/-    2.25  0.060 / 0.070
G13     264.6          35.4                8.5 +/-    2.16      13.4 +/-    2.16  0.280 / 0.460
G15     294.1          16.7                5.0 +/-    0.81      11.9 +/-    0.81  0.250 / 0.380
G17     252.5          73.9                8.5 +/-    0.44       8.8 +/-    0.44  0.030 / 0.030
G19     231.9          50.1                8.4 +/-    2.20      10.6 +/-    2.20  0.030 / 0.030
G28     35.2           56.7                8.3 +/-    0.71       9.8 +/-    0.71  0.110 / 0.170
G30     142.2          49.1                9.8 +/-    0.55      12.5 +/-    0.55  0.100 / 0.180