PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/08-05:28:10
G02     215.6          62.8                8.1 +/-    1.17       9.0 +/-    1.17  0.040 / 0.080
G06     61.3           77.1                4.9 +/-    0.87       5.1 +/-    0.87  0.040 / 0.080
G12     318.3          34.9                3.8 +/-    2.10       6.0 +/-    2.10  0.210 / 0.410
G17     57.3           33.0                2.4 +/-    0.51       3.9 +/-    0.51  0.150 / 0.430
G19     40.6           48.5                4.6 +/-    1.10       6.0 +/-    1.10  0.060 / 0.100
G24     266.1          41.4                7.6 +/-    1.57      10.8 +/-    1.57  0.050 / 0.080
G28     123.2          12.7                5.0 +/-    2.52      13.3 +/-    2.52  0.060 / 0.070