PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/28-07:28:10
G02     219.3          63.5               10.3 +/-    1.06      11.4 +/-    1.06  0.050 / 0.100
G06     52.8           74.0                9.3 +/-    0.55       9.6 +/-    0.55  0.050 / 0.060
G12     319.0          38.0                5.5 +/-    1.40       8.3 +/-    1.40  0.060 / 0.060
G17     61.4           27.9                7.7 +/-    2.68      14.0 +/-    2.68  0.060 / 0.070
G19     40.9           48.5                8.0 +/-    1.52      10.3 +/-    1.52  0.130 / 0.320
G24     255.4          41.1                7.1 +/-    3.80      10.1 +/-    3.80  0.180 / 0.320
G28     124.1          13.3                8.6 +/-    2.07      22.3 +/-    2.07  0.030 / 0.020